Italy vs Switzerland — 1973 vs 1970

| 365 GT4 BB | Hai 450 SS | |
|---|---|---|
| Horsepower | 380 hp | 450 hp |
| Torque | 306 lb-ft | 461 lb-ft |
| Engine Size | 4,390 cc | 6,974 cc |
| 0-60 mph | 5.4 sec | 4.8 sec |
| Top Speed | 188 mph | 180 mph |
| ¼ Mile | 13.5 sec | 12.5 sec |
| Weight | 3,373 lbs | 2,943 lbs |
| Wheelbase | 2,500 mm | 2,500 mm |
| Length | 4,400 mm | 4,140 mm |
| Units Produced | 387 | 2 |
| Original MSRP | $38,000 | — |
| Value (Excellent) | $800,000 | $5,000,000 |
| Collectibility | 9/10 | 10/10 |
| Rarity | 8/10 | 10/10 |
Numbers favor the 1970 Monteverdi Hai 450 SS with more power, quicker acceleration, lighter weight. The 1973 Ferrari 365 GT4 BB offers higher top speed, better value, and has its own devoted following. For those who let their heart decide, either car delivers a rewarding ownership experience.
The rivalry between Italy and Switzerland automotive industries has produced legendary matchups, and the 1973 Ferrari 365 GT4 BB versus 1970 Monteverdi Hai 450 SS is among the most fascinating. These two cars represent the best of their national engineering schools. The 1970 Monteverdi Hai 450 SS holds a clear advantage in raw power with 450 hp compared to 380 hp, a 70-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Ferrari 365 GT4 BB uses a Flat-12 DOHC displacing 4,390 cc, while the Monteverdi Hai 450 relies on a V8 OHV with 6,974 cc. In the sprint to 60 mph, the 1970 Monteverdi Hai 450 SS edges ahead at 4.8 seconds versus 5.4 seconds. The Monteverdi Hai 450 carries a weight advantage, tipping the scales 430 lbs lighter. Rarity plays a significant role here — with only 2 units built, the 1970 Monteverdi Hai 450 SS is considerably scarcer than the Ferrari 365 GT4 BB's 387 examples. On the collector market, the 1970 Monteverdi Hai 450 SS commands a significant premium over the 1973 Ferrari 365 GT4 BB, reflecting differences in prestige and rarity.